http://hdl.handle.net/123456789/15 2026-04-19T02:15:34Z 2026-04-19T02:15:34Z Ngwepe, Mantlo Richard http://hdl.handle.net/123456789/1397 2018-07-11T07:46:04Z 2015-03-31T00:00:00Z

Evaluating Rainwater Harvesting and Conversation Technique on the Towoomba/Arcadia Ecotope Ngwepe, Mantlo Richard The changes in climate, especially poor rainfall patterns and distributions are key issues posing major agricultural challenges for food security and threaten the rural livelihoods of many communities in Limpopo Province. Rainfall(P) is low and limited. These limited P is mostly lost through runoff and evaporation, which results in low soil moisture availability and possible crop failure. Therefore, techniques that reduce these water losses are important for improving dryland crop production and rainwater productivity (RWP). The objectives of the study are to determine the potential and effectiveness of rainwater harvesting and conservation techniques (RWH&CT's) to conserve and improve plant available water (PAW) for dryland maize production and also determine the efficiency of the RWH&CT's to improve dryland maize yield and RWP compared to conventional tillage (CON).

2015-03-31T00:00:00Z Ngwepe, M.R http://hdl.handle.net/123456789/1396 2018-07-11T07:44:37Z 2015-01-01T00:00:00Z

Evaluating Rainwater Harvesting and Conservation Techniques on the Towoomba/Arcadia Ecotope Ngwepe, M.R The objectives of the study were to determine the potential and effectiveness of rainwater harvesting and conservation techniques (RWH&CT) to conserve and improve plant available water (PAW) for dryland maize production and also determine the efficiency of the RWH&CT's to improve dryland maize yield and Rainwater Productivity (RWP) compared to conventional tillage (CON). The study was conducted over a period of two growing seasons (2008/09 and 2009/20) using maize as indicator crop at the Towoomba Research Station of the Limpopo Department of Agriculture of South Africa, on an Arcadia ecotope. The experiment was laid out in a randomized complete block design, with four replications and five treatments. The five treatments used in the study were: CON, No-till (NT), In-field rainwater harvesting (IRWH), mechanized basins (MB) and Daling plough (DAL). The IRWH and DL ere classified as rainwater harvesting techniques (RWHT's), whilst MB and NT were classified as water conservation techniques.

2015-01-01T00:00:00Z Mashilo, J http://hdl.handle.net/123456789/1271 2017-07-03T07:36:58Z 2013-11-01T00:00:00Z

Response of Dual-Purpose Cowpea Landraces to Water Stress Mashilo, J The objectives of this study were: 1. to determine morphological responses of four dual-purpose cowpea landraces to water deficits during vegetative and reproductive stages; 2. to determine physiological response of four dual-purpose cowpea landraces to water deficits and recovery during the reproductive stage; 3. to determine yield performance of cowpea landraces after recovery from water stress and how it relates to the above objective. Four cowpea landraces namely: Lebudu, Lehlodi, Sejwaleng and Marathathane were collected from Kgohloane and Ga_Mphela villages in Limpopo, South Africa. Pot experiments were conducted under glasshouse conditions at the Controlled Environment Facility (CEF), University of Kwazulu Natal. The fist pot experiment evaluated the morphological responses of four cowpea landraces to water stress and recovery. The study was conducted as a single factor experiment laid out in randomized complete block (RCBD). The treatments (four cowpea landraces) were each planted in 40 pots giving a total of 160 experimental units (drained polyethylene pots with a 5 litre capacity). Each plant in each pot was treated as a replicate. Plants were all well-watered until the formation of six fully expanded trifolates, then irrigation was withheld for 28 days to stimulate drought stress during the vegetative growth. The imposition of drought stress was terminated by re-watering all plants after 28 days. The cowpea plants were re-watered sufficiently and allowed to grow until the four landraces reached 50% flowering stage. Watering was withheld again at 50% flowering for a two-week period for all the for landraces to stimulate drought stress during the reproductive growth.

2013-11-01T00:00:00Z Malebana, M.E http://hdl.handle.net/123456789/1270 2017-06-28T14:55:54Z 2014-01-01T00:00:00Z

Induced Mutation in Sweet Potato aimed at Improved Quality and Drought Adaptation Malebana, M.E

2014-01-01T00:00:00Z